This scatter plot visualizes the Iris Dataset, mapping petal width against sepal length. Each species of iris is represented by a distinct symbol, as determined by the `symbolValue` function. The visualization is built with D3.js, using the `scaleLinear`, `scaleOrdinal`, `axisLeft`, `axisBottom`, and `symbols` APIs. Data is loaded from a remote CSV file, and the plot is rendered as an SVG element, sized to fill the browser window. Axes and marks are generated via D3's join operation.